“While nothing can undo the horrific violence that occurred in Mattapan in 2010, it is my hope that today’s ruling will give some comfort to the families of these victims, their friends and our neighbors that justice has been served. I commend the jury and the office of Suffolk District Attorney Dan Conley for their hard work. The fact remains, however, that from Mattapan to Newtown, gun violence is a cancer infecting our society. As mayor, I have seen too many lives ended and forever altered, and we should not have to endure one more senseless tragedy before we have a national policy on guns that takes away the loopholes in the laws and removes automatic weapons from our neighborhoods.”